Hi, I currently have a USB hub connected to my airport router and have two external drives connected. One drive I am using as my Time Machine backup drive and the other I just purchased to store media (music,etc). If I plug my new drive into my Macbook Pro directly via USB it shows in Time Machine and I assume I can backup to it if I remove it from the 'do not backup' options. However, when the drive is plugged into airport Time Machine doesn't see it at all. Is there a way to have the two drives connected via airport and have Time Machine backup the new drive? Thanks!